Gravel-screen



(No Model.) 8

J. D. LOUGHRAN.

GRAVEL SCREEN. No. 402,845. Patented May-'7, 1889.

C? CZ A TTURNEYS.

NITED STATES PATENT GFFICE.

JOHN D. LOUGI-IRAN, OF NEOSHO FALLS, KANSAS.

GRAvEL-so'REEN.

SPECIFICATION forming part of Letters Patent No. 402,845, dated May 7, 1889.

Application filed October l2, 1888. Serial No. 287.901. (No model.)

.T0 all whom t may con/ecrit: y

Be it known that I, JOHN D. LOUGHRAN, a citizen of the United States, residing at Neo sho Falls, county of Woodson, and State of Kansas, have invented a new and useful Improvement in Sand or Gravel Screens, of which the following is a full, clear, and exact description.

The invention consists in a sand or gravel screen constructed and arranged as will be hereinafter specifically set forth and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the iigures.

Figure l is a plan view of my improved screen. Fig. 2 is a longitudinal section thereof through the line x fr, Fig. l; and Fig. 3 is va transverse sectional elevation thereof through the line y ly, Fig. 2.

In the drawings, a represents a tank, of metal or other suitable material, formed, preferably, as shown in the drawings, with sides sloping inward to its bottom, and is provided with the outlets o, of which I have shown three, each controlled by a slide, c. Suspended within the tank ct is an inclined drum-screen, CZ, mounted upon an inclined shaft, c, having its bearings in a frame, j', at each end, which frameis by preference supported directly from the end pieces of the tank.

The drum-screen d is composed of a spider, g, at one end, mounted upon the shaft e, its arms extending to a band or ring, h, concentric with the wire mesh of the screen which it serves to support in place at that end. At a distance from the other end of the screensay about one-third its entire lengthanother spider, g', and band h are placed, to support the screen at that end.

Inside of the (ilrum-screen, at the lower end thereof, buckets 7o are placed. These buck ets are formed, as shown, by crosspieces between two inwardlyprojecting circular flanges, j, ot' a ring, K. Pieces lL' extend between one of the flangesj and the ring h near it, which pieces act as buckets and also serve to support the bucket-ring and strengthen the structure at that end.

Surrounding the shaft e at the bueketend of the screen is a worm conveyer, Z, whose feed is outward when the screen is in operation onto the inclined chute m.

The operation of my screen is as follows:

The screen being charged with the material introduced at the higher end, power is communie-ated to the shaft c through the pulley n from any suitable motor. The tank a being filled with water, the material in the screen, if it already is not so, soon becomes wet. The centrifugal action of the revolving screen soon rids the material within it of the undesired particles, and the remainder will be fed along the buckets t' to the buckets lo by reason of the inclination of the screen toward the bucket end, and the buckets will elevate the screenedmaterial sufficiently to deposit it upon the receptacle or chute m, whence the conveyer will convey it off the chute to any receptacle placed near the end of the chut-e.

Of course the form and proportions of my apparatus may be varied Without departing from my invention, and the mesh of the wire screen will be varied to suit the material to be operated upon.

Having thus described my invention, what I claim as new, and desire to secure by Letters Pat-ent, is-

1. In a sand and gravel screen, the combination, with a tank, of a revolving screen mounted within the saine upon the slanting shaft e, the strengthening-ring h near the lower end of the screen, the flanged ring K at the lower end of the screen, divided to form the buckets 7c, the longitudinal ribs t' c', uniting` the rings 7L and K, and screen receptacle or chute m, secured to the slanting shaft e within the revolving screen, and a chute for feeding the material to the screen, substantially as shown and described.

2. In a sand and gravel screen, the combi nation, with a tank, of 'a revolving screen mounted within the same upon the slanting shaft c, the strengthening-ring h near the lower end of the screen, anged ring K at the lower end of the screen and divided to form the buckets k, the lon 0'itudinal ribs t' 1'., uniting the rings h and Ix, the screen receptacle or chute m, secured to the slanting drivingshaft c, the worm conveyer l, secured to lthe lower end of shaft c, directly over the screenchute m, and a chute for supplying the material to the screen, substantially as shown and described.

JOHN D. LOUGHRAN. lVitnesses:

J. G. RODMELL, Guo. RATHBUN.

IOO 

